CN105986377B - A kind of sewing machine and its correlation electric eye device and automatic method for correcting - Google Patents
A kind of sewing machine and its correlation electric eye device and automatic method for correcting Download PDFInfo
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- CN105986377B CN105986377B CN201510061291.XA CN201510061291A CN105986377B CN 105986377 B CN105986377 B CN 105986377B CN 201510061291 A CN201510061291 A CN 201510061291A CN 105986377 B CN105986377 B CN 105986377B
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Abstract
The present invention discloses a kind of sewing machine and its correlation electric eye device and automatic method for correcting, which includes sending out first the first detection light of intensity and second the second detection light of intensity, passes through the first object to light receiver；The the first lower limit desired value and the second lower limit desired value of corresponding first and second detection lights are generated respectively；The first intensity third detection light and the 4th detection light of the second intensity are sent out until light receiver；The first upper limit desired value and the second upper limit desired value of corresponding third and fourth detection light are generated respectively；One is selected from the average value or the average value of the second lower limit desired value and the second upper limit desired value of the first lower limit desired value and the first upper limit desired value, the judgement threshold value of the first object whether occurs as between judgement light emitting portion and light receiver；And the first object institute objective emission luminous intensity to be used is detected as correlation electric eye to judge that threshold value corresponds to detection luminous intensity.
Description
Technical field
The present invention relates to correlation electric eye device, in particular to the correlation electric eye device that can be applied to sewing machine and
Its automatic method for correcting.
Background technology
Sewing machine reaches that saving is artificial and material cost to improve the degree of automation to increase sewing efficiency.It generally can be
Airborne device electric eye of sewing detects cloth discharge position, and the functions such as automatic sewing, tangent line are carried out to facilitate.Presently commercially available common electric eye
There are the reflective electric eye of knob integral type, the reflective electric eye of Integral push-button and infrared opposite-radiation formula electric eye.Knob integral type is anti-
The formula electric eye of penetrating needs user to manually adjust electric eye intensity, and is confirmed whether just according to light emitting diode (LED) indicator light thereon
Often.The reflective electric eye of knob integral type has the shortcomings that, for example, its detection intensity is not optimum detection intensity, its volume
It is big influence whether sewing, can not under automatic mode (on line) correction and price it is high.The reflective electric eye of Integral push-button
It then can automatically be corrected by button, to improve artificial adjustment problem.But the reflective electric eye of Integral push-button is still lacked with some
Point, for example, its volume influences whether greatly sewing, (on line) can not correct under automatic mode, can not detect transparent cloth material
The cloth and price of matter are high.In addition, the reflective electric eye of knob integral type and the reflective electric eye of Integral push-button are shading because of it
ON is directly exported and can not be carried out under automatic mode (on line) correction, and this generates following disadvantages：1, when sewing machine electric eye needs
It wants timing to be possible to that sewing machine can be caused to judge by accident and start, in turn results in the danger of operating personnel；2, the reflective electricity of integral type
The opposite situation of eye None- identified operator timing sequence, this may cause sewing machine to judge by accident and start, in turn result in operation
The danger of personnel；3, the reflective electric eye timing of integral type, which can not digitize, learns whether correction is optimum value, and can not carry out
The action of fine tuning.Infrared opposite-radiation formula electric eye has the advantages that at low cost and assortable sewing machine accomplishes integrated design.But
It is that existing infrared opposite-radiation formula electric eye can not be corrected automatically, and the luminous intensity parameter for manually adjusting LED in correlation electric eye is past
It is past to be unable to get optimum value.Moreover, infrared opposite-radiation formula electric eye can't detect the cloth of transparent material.In addition, above-mentioned three kinds of electricity
The eye user that can not all give a previous notice corrects.In other words, it can not be automatically reminded to make using the sewing machine of above-mentioned three kinds of electric eyes
When this is verified user.And above-mentioned sewing machine can not also learn electric eye tune when ready-made clothes factory is used and need to be verified for a long time
Whether the emission parameter behind school is best emission parameter value.Disadvantages mentioned above is caused i.e. time-consuming when sewing machine production verification and is taken a lot of work.
In view of this, the present invention proposes a kind of automatic method for correcting of correlation electric eye device.
Invention content
The brief overview about the present invention is given below, in order to provide the basic reason about certain aspects of the invention
Solution.It should be appreciated that this general introduction is not the exhaustive general introduction about the present invention.It is not intended to determine the key of the present invention
Or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides certain concepts in simplified form, with
This is as the preamble in greater detail discussed later.
One embodiment of the invention provides a kind of automatic method for correcting of correlation electric eye.The correlation electric eye is sent out with light
Penetrate portion and light receiver.The automatic method for correcting of the correlation electric eye includes：First intensity is at least sent out by the light emitting portion
Multiple second detection lights of multiple first detection lights and the second intensity pass through one first object to the light receiver；By the light
Receiving part generates under one first lower limit desired value of corresponding such first detection light and the one second of corresponding such second detection light
Limit desired value；By the light emitting portion at least send out first intensity multiple third detection lights and second intensity multiple
Four detection lights directly reach the light receiver；One first upper limit target of corresponding such third detection light is generated by the light receiver
One second upper limit desired value of value and corresponding such 4th detection light；According to the first lower limit desired value and first upper limit target
Value generates one first difference；One second difference is generated according to the second lower limit desired value and second upper limit desired value；Foundation should
First and second differences, from the average value or the second lower limit target of the first lower limit desired value and first upper limit desired value
Selected among the average value of value and second upper limit desired value first, as judge the correlation electric eye the emission part and this connect
Whether the judgement threshold value of first object is occurred between receipts portion；And with the intensity of the corresponding detection light of judgement threshold value,
First object institute objective emission luminous intensity to be used is detected as the correlation electric eye.
One embodiment of the invention provides a kind of correlation electric eye device.The correlation electric eye device includes a light emitting
Portion, a light receiver and a correction unit.The correction unit carries out a correct operation, to determine that the correlation electric eye device detects
One first object institute objective emission luminous intensity to be used.The correct operation includes：It controls the light emitting portion and at least sends out first
Multiple first detection lights of intensity and multiple second detection lights of the second intensity pass through first object to the light receiver；
Respectively according to the light receiver receive such first detection light and such second detection light, generate one first lower limit desired value and
One second lower limit desired value；Control multiple third detection lights and the last the second that the light emitting portion at least sends out first intensity
Multiple 4th detection lights of degree directly reach the light receiver；Respectively according to the light receiver receive such third detection light and
Such 4th detection light generates one first upper limit desired value and one second upper limit desired value；According to the first lower limit desired value and
First upper limit desired value generates one first difference；One the is generated according to the second lower limit desired value and second upper limit desired value
Two differences；According to first and second difference, from the average value of the first lower limit desired value and first upper limit desired value or
It is selected among the average value of the second lower limit desired value and second upper limit desired value first, as the correlation electric eye is judged
Whether the judgement threshold value of first object is occurred between the emission part and the receiving part；And it is the judgement threshold value is corresponding
The intensity of detection light, as the objective emission luminous intensity.
One embodiment of the invention provides a kind of sewing machine.The sewing machine includes a correlation electric eye device, a working machine
Platform and a correlation electric eye driving circuit.Correlation electric eye device includes a light emitting portion, a light receiver and a correction
Portion.The correction unit carries out a correct operation, to determine that the correlation electric eye device detects one first object institute target to be used
Emitted luminescence intensity.The correct operation includes：Control the light emitting portion at least send out the first intensity multiple first detection lights and
Multiple second detection lights of second intensity pass through first object to the light receiver；It is received respectively according to the light receiver
Such first detection light and such second detection light generate one first lower limit desired value and one second lower limit desired value；Control should
Light emitting portion at least send out first intensity multiple third detection lights and second intensity multiple 4th detection lights it is direct
Reach the light receiver；Such third detection light according to light receiver reception and such 4th detection light respectively, generate one
First upper limit desired value and one second upper limit desired value；One is generated according to the first lower limit desired value and first upper limit desired value
First difference；One second difference is generated according to the second lower limit desired value and second upper limit desired value；According to this first and
Two differences, from the average value of the first lower limit desired value and first upper limit desired value or the second lower limit desired value and this
It is selected among the average value of two upper limit desired values first, as between the emission part and the receiving part for judging the correlation electric eye
Whether the judgement threshold value of first object is occurred；And by the intensity of the corresponding detection light of judgement threshold value, as the mesh
Mark emitted luminescence intensity.The work table includes a working face, to place first object to carry out sewing operation.The light connects
Receipts portion is set on the working face.The light emitting portion is set on the work table.It is right that the correlation electric eye driving circuit couples this
Penetrate formula electric eye device.The correlation electric eye driving circuit carries out the mesh to drive the light emitting portion with correction unit cooperation
Mark the correction of luminous intensity.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Figure 1A and Figure 1B is a first embodiment one correlation electric eye device 10 of realization detection one first according to the present invention
The schematic diagram of object 11；
Fig. 2 is the schematic diagram of a second embodiment one sewing machine 20 of realization according to the present invention；
Fig. 3 is oneself for the correlation electric eye device 10 that a 3rd embodiment according to the present invention illustrates the present invention with flow chart
Dynamic method for correcting；
Fig. 4 illustrates how correlation electric eye device 10 generates step for a fourth embodiment according to the present invention with flow chart
First and second differences described in S311~step S315.
In figure：
10~correlation electric eye device
110~light emitting portion
120~light receiver
130~correction unit
131~analog-digital converter
132~processing unit
11~the first objects
20~sewing machine
21~the second objects
200~correlation electric eye device
201~light emitting portion
202~light receiver
203~correction unit
210~work table
211~working face
220~correlation electric eye driving circuit.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Described in the attached drawing of the present invention or a kind of embodiment
Elements and features can be combined with elements and features shown in one or more other attached drawings or embodiment.It should
Note that for purposes of clarity, being omitted in attached drawing and explanation unrelated to the invention, known to persons of ordinary skill in the art
The expression and description of component and processing.Based on the embodiments of the present invention, those of ordinary skill in the art are not paying creation
Property labour under the premise of the every other embodiment that is obtained, shall fall within the protection scope of the present invention.
Figure 1A and Figure 1B is a first embodiment one correlation electric eye device 10 of realization detection one first according to the present invention
The schematic diagram of object 11.As shown in Figure 1A, correlation electric eye device 10 include a light emitting portion 110, a light receiver 120, with
An and correction unit 130.One first object 11 is placed between light emitting portion 110 and light receiver 120.Light emitting portion 110 is sent out
Detection light passes through the first object 11 to reach light receiver 120.In the first embodiment of the present invention, light emitting portion 110 is sent out
Spectrum infrared ray is detected, but the present invention is not limited thereto.Light receiver 120 is coupled to correction unit 130.Light receiver 120 passes through
Its receiving unit (for example, photo resistance) receives the detection light, with an analog intensity signal of the corresponding detection light of generation to school
Positive portion 130.Correction unit 130 is coupled to light emitting portion 110, to control whether light emitting portion 110 sends out detection light to light-receiving
Portion 120.Correction unit 130 includes an analog-digital converter 131 and a processing unit 132.The Analog-digital Converter of correction unit 130
Device 131 to by above-mentioned multiple analog intensity signals be converted into a digital correction signal (data) give processing unit 132.Correction unit
130 processing unit 132 handles above-mentioned multiple digital correction signals and learns the correction data for receiving detection light, and by above-mentioned school
Correction data is corrected the judgement information of operation as correlation electric eye device 10.For example, processing unit 132 is by above-mentioned school
Correction data is as one of the foundation for judging whether detection light passes through the first object 11 to reach light receiver 120, or as decision
Correlation electric eye device 10 detect the first object 11 objective emission luminous intensity to be used one of foundation.The of the present invention
In one embodiment, processing unit 132 can be microcontroller (MCU；Microcontroller Unit), but the present invention is not limited to
This.
In the first embodiment of the present invention, correlation electric eye device is by carrying out a correct operation, to determine correlation
Electric eye device 10 detects 11 institute objective emission luminous intensity Aopt to be used of the first object.As shown in Figure 1A, a user is by
One object 11 is placed between light emitting portion 110 and light receiver 120 so that the detection light that light emitting portion 110 is sent out can pass through
First object 11 reaches light receiver 120.Correction unit 130 controls multiple that light emitting portion 110 sequentially sends out the first intensity A1
One detection light L1 passes through the first object 11 to light receiver 130.Light receiver 120 receives above-mentioned multiple first detection light L1, and
Multiple first analog intensity signals of corresponding above-mentioned multiple first detection light L1 are generated to correction unit 130.The simulation of correction unit 130
Above-mentioned multiple first analog intensity signals are converted into multiple first digital correction signals to processing unit by digital quantizer 131
132.The processing unit 132 of correction unit 130 handles above-mentioned multiple first digital correction signals and obtains corresponding multiple first corrections
Data, and one is selected as one first lower limit desired value T1 among above-mentioned multiple first correction datas.
In the first embodiment of the present invention, light emitting portion 110 sequentially sends out the first detection light of ten the first intensity A1
L1 is to light receiver 130.Therefore, processing unit 132 can handle to obtain ten the first correction datas.Then, processing unit 132 from
One is selected among ten the first correction datas as the first lower limit desired value T1.In the first embodiment of the present invention, processing unit
132 are first calculated one first average value of ten the first correction datas.Then, processing unit 132 is by the first average value and one
First error amount is added to obtain one first upper limit value.In the first embodiment of the present invention, processing unit 132 first calculates ten
One standard deviation of one correction data is as above-mentioned first error amount.However, the present invention is not limited thereto, above-mentioned first error amount also may be used
It is half standard deviation or any default value.Finally, processing unit 132 is looked among ten the first correction datas
Go out to be less than maximum first correction data of above-mentioned first upper limit value as the first lower limit desired value TL1.
For example, it if ten the first correction datas are respectively 9,12,14,15,16,16,15,13,35,15, handles
It is respectively 16 and 6.6 that above-mentioned first average value and above-mentioned first error amount, which is calculated, in unit 132.132 phase of processing unit adds
State the first average value and above-mentioned first error to be worth to above-mentioned first upper limit value be 22.6, and finally select the first lower limit desired value
TL1 is 16.Thus, first may would not be chosen as because receiving the 9th the first correction data 35 of influence of noise of dashing forward
Lower limit desired value TL1.It is worth noting that, in other embodiments of the invention, processing unit 132 also can be directly by all
Numerical value the maximum in one correction data (detection light has through the first object 11) is set as the first lower limit desired value TL1.
Then, correction unit 130 controls light emitting portion 110 and sequentially sends out the second detection light L2 of the second intensity of n times A2, n times
The 5th of the third detection light L3 of third intensity A3, the 5th intensity A5 of the 4th detection light L4 and n times of the 4th intensity A4 of n times
Detection light L5 passes through the first object 11 to light receiver 130.It is to ask to facilitate explanation in the first embodiment of the present invention, N is taken to be equal to
10.It is worth noting that N is alternatively other positive integers, the value of N depends on the accuracy of correction, for example, N is taken to be equal to 105 to obtain
To more accurate lower limit desired value.Therefore, 110 system of light emitting portion sequentially sends out the second detection light L1 of ten the second intensity A2 extremely
Light receiver 130.Then, processing unit 132 can handle to obtain ten the second correction datas, and from ten the second correction datas it
In select one as the second lower limit desired value TL2.Similarly, processing unit 132 sequentially handle obtain third lower limit desired value TL3,
4th lower limit desired value TL4 and the 5th lower limit desired value TL5.
Then, as shown in Figure 1B, to obtain each light emitting intensity A1~A5 in correlation electric eye device 10 corresponding
After lower limit desired value TL1~TL5, user removes the first object 11 so that the detection light that light emitting portion 110 is sent out is able to directly
Reach light receiver 120.In the first embodiment of the present invention, correction unit 130 controls light emitting portion 110 and equally sequentially sends out ten
The third of the first detection light L1 of secondary first intensity A1, the second detection light L2 of ten the second intensity A2, ten third intensity A3
The 5th detection light L5 of the 4th detection light L4 and ten the 5th intensity A5 of detection light L3, ten the 4th intensity A4.It is different from
Figure 1A, above-mentioned multiple detection light L1~L5 systems directly reach light receiver 130, rather than across the first object 11 to light-receiving
Portion 130.Then, light receiver 120 receives above-mentioned multiple detection light L1~L5, and generates corresponding above-mentioned multiple detection light L1~L5
Multiple analog intensity signals to correction unit 130.Finally, correction unit 130 handle above-mentioned multiple analog intensity signals obtain it is each
Corresponding first upper limit desired value TH1 of light emitting intensity A1~A5, the second upper limit desired value TH2, third upper limit desired value
TH3, the 4th upper limit desired value TH4 and the 5th upper limit desired value TH5.It is worth noting that, in other embodiments of the invention,
Processing unit 132 also can directly by all first correction datas, (detection light by the first object 11 by not reaching light-receiving directly
Portion 120) in numerical value reckling be set as the first upper limit desired value TH1.
In the first embodiment of Figure 1B, for convenience of description, first introduce how correction unit 130 handles L1 pairs of the first detection light
Ten the first analog intensity signals answered obtain the first upper limit desired value TH1.First, processing unit 132 can handle above-mentioned multiple
First analog intensity signal obtains ten the first correction datas.Then, ten the first correction numbers are first calculated in processing unit 132
According to one first average value and a standard deviation, and subtract each other the first average value and one first error amount to obtain one first lower limit
Value.Processing unit 132 is by above-mentioned standard deviation as above-mentioned first error amount, however, the present invention is not limited thereto, above-mentioned first error
Value or two points of a standard deviation or any default value.Finally, processing unit 132 is from ten the first correction datas
Among find out minimum first correction data more than above-mentioned first lower limiting value as the first upper limit desired value TH1.For example,
If ten the first correction datas are respectively 35,32,29,37,38,36,40,23,40,30, processing unit 132 is calculated
It is respectively 34 and 5.7 to state the first average value and above-mentioned first error amount.Processing unit 132 subtracts each other above-mentioned first average value and above-mentioned
It is 28.3 that first error, which is worth to above-mentioned first upper limit value, and it is 29 finally to select the first upper limit desired value TH1.Thus,
It may would not be chosen as the first upper limit desired value TH1 because receiving the 8th the first correction data 23 of influence of noise of dashing forward.
In the first embodiment of Figure 1B, by identical operation mode, processing unit 132 sequentially handle obtain it is above-mentioned more
Corresponding second upper limit desired value TH2 of a detection light L2~L5, third upper limit desired value TH3, the 4th upper limit desired value TH4 and
Five upper limit desired value TH5.
At this point, processing unit 132 can be calculated pair by the first upper limit desired value TH1 and the first lower limit desired value TL1
Penetrate whether formula electric eye device 10 the first object 11 occurs using between the first detection light L1 detection emission parts 110 and receiving part 120
The first difference D1, wherein the first difference D1 is the difference subtracted each other of the first upper limit desired value TH1 and the first lower limit desired value TL1.
Then, processing unit calculates separately out corresponding first differences of detection light L1~L5 of each light emitting intensity A1~A5
D1, the second difference D2, third difference D3, the 4th difference D4 and the 5th difference D5.
In the first embodiment of the present invention, processing unit 132 will be selected most among first to the 5th difference D1~D5
Big person's (being, for example, the 5th difference D5), then decision gate is set to the average value of upper limit desired value and lower limit desired value corresponding to it
Threshold value Ddet (being, for example, the average value of the 5th upper limit desired value TH5 and the 5th lower limit desired value TL5), and will judge threshold value
The corresponding emitted luminescence intensities of Ddet are set to objective emission luminous intensity Aopt.In the first embodiment of the present invention, in order to avoid making an uproar
So that the processing of correction unit 130 obtains incorrect threshold value, correction unit 130 can first judge selected maximum for sound or other interference
Whether difference (numerical value the maximum, for example, the 5th difference D5 among the i.e. first to the 5th difference D1~D5) is less than a decision content,
If selected maximum difference is less than the decision content, correlation electric eye device 10 can send out warning, inform that user corrects
Failure, it is necessary to check electric eye device and be corrected again.The processing unit 132 of correction unit 130 can be by well known mistake more
Code executes above-mentioned determination method.Further it should be noted that user can keep correlation electric by changing different decision contents
Eye device 10 is able to more accurately detect the cloth of transparent material.
In the first embodiment of the present invention, correlation electric eye device 10, which carries out above-mentioned all correct operations, to be judged
Threshold value Ddet and its corresponding objective emission luminous intensity Aopt.Above-mentioned correct operation is being carried out by correlation electric eye device 10
Later, the light emitting portion 110 of correlation electric eye device 10 will use the detection light of objective emission luminous intensity Aopt to be detected,
And the correction unit 130 of correlation electric eye device 10 can use judgement threshold value Ddet judgement light emittings portion 110 and light receiver 120
Between whether there is the first object 11.For example, when the detection data that the processing of correction unit 130 of correlation electric eye device 10 obtains is big
When judging threshold value Ddet, correction unit 130 can judge that the first object 11 leaves between light emitting portion 110 and light receiver 120
Range.At this point, possible situation, which is user, is completed sewing, that is, stop the running of sewing machine.
Fig. 2 is the schematic diagram of a second embodiment one sewing machine 20 of realization according to the present invention.Second in the present invention is real
It applies in example, sewing machine 20 includes a correlation electric eye device 200, a work table 210 and a correlation electric eye driving circuit
220, wherein correlation electric eye device 200 is the correlation electric eye device 10 described in above-mentioned first embodiment.Work table 210 wraps
Include a working face 211.Work table 210 is placing one second object 21 to carry out sewing operation.Second object 21 can be
The cloth of one translucent material, however, the present invention is not limited thereto.The light receiver 202 of correlation electric eye device 200 is flat set on work
On face 211.The light emitting portion 201 of correlation electric eye device 200 be set to work table 210 on, but not working face 211 it
On.Correlation electric eye driving circuit 220 couples correlation electric eye device 200.Correlation electric eye driving circuit 220 is driving pair
The light emitting portion 201 of formula electric eye device 200 is penetrated, and coordinates progress target to shine with the correction unit 203 of correlation electric eye device 200
The correction of intensity.
In the second embodiment of the present invention, user can first carry out the second object 21 before operating sewing machine 20
One automatic corrigendum is to find out most suitable judgement threshold value Ddet and its corresponding objective emission luminous intensity Aopt.At this point, user
Second object 21 can be placed on work table 210 so that the detection light that light emitting portion 201 is sent out is obtained through the second object
21 to light receiver 202.Then, user can press a button (non-icon) startup above-mentioned first of correlation electric eye device 200
Correct operation described in embodiment.At this point, correlation electric eye device 200 is corresponding in the detection light for calculating each light emitting intensity
After lower limit desired value, prompting can be sent out and inform that user removes the second object 21 so that the detection light that light emitting portion 201 is sent out obtains
Directly to reach light receiver 202.After user removes the second object 21, user presses correlation electric eye device 200 again
Button continue correct operation described in above-mentioned first embodiment to start correlation electric eye device 200, and find out correlation
Electric eye device 200 most suitable judgement threshold value Ddet and its corresponding objective emission luminous intensity Aopt.Hereafter, user is grasping
When making sewing machine 20, correlation electric eye device 200 can emit the detection light of objective emission luminous intensity Aopt, to judge threshold value
Judge on the basis of Ddet and its corresponding lower warning value or upper warning value the position of correlation electric eye device 200 whether deviate or
Whether the intensity of electrical signals fails.For example, when the detection that the processing of the correction unit 203 of correlation electric eye device 200 obtains
When data are more than lower warning value, that is, the position originally set or electrical signals may have been deviateed by representing correlation electric eye device 200
Intensity failed.In more detail, when sewing machine 20 because vibrations for a long time are so that correlation electric eye device 200 deviates originally
When position, the correction unit 203 of correlation electric eye device 200 can handle to obtain the abnormality detection data of corresponding detection light, when this is different
When normal detection data is more than " lower limit desired value TL+0.4*Ddet " (descending warning value), it is known that light receiver 202 at this time
The detection light of higher-strength is received, and is thus judged this is because correlation electric eye device 200, which deviates original position, makes detection
Light directly reaches light receiver 202.Setting of the present invention in relation to above-mentioned decision condition is not limited to this, for example, can also set
It states abnormality detection data and is more than the judgement item that " lower limit desired value TL+0.25*Ddet " deviates as correlation electric eye device 200
Part.Correlation electric eye device 200 can send out warning at this time, and user is reminded to have to check for electric eye device and be corrected again.
It is worth noting that the embodiment of the present invention is not limited to inform that correlation electric eye device 200 carries out certainly with button
Dynamic corrigendum operation can also set other correlation electric eye devices 200 and carry out correcting behaviour automatically in other embodiments of the invention
The initial conditions of work, for example, correlation electric eye device 200 detects and more renews cloth.In addition, in the other embodiment of the present invention
In, sewing machine 20 is configured to after correlation electric eye device 200 has executed automatic corrigendum operation, and sewing machine 20 could start
Running, to ensure user's safety.
When the receiving unit aging of the receiving part 202 of correlation electric eye device 200, correction unit 203 handles obtained inspection
Measured data can be also abnormal (i.e. the strength retrogressions of electrical signals).For example, the detection data per treatment that obtains of correction unit 203
Numerical value all more previous hour.At this point, in the second embodiment of the present invention, sewing machine 20 can send out prompting and inform user again
Automatically it is corrected, more suitably judges threshold value Ddet and its corresponding objective emission luminous intensity Aopt to obtain one group.It lifts
For example, correlation electric eye device 200 further includes the LED warning lamps (not shown) for being coupled to correction unit 203；Work as correction unit
When the correction data that 203 processing obtain is abnormal, correction unit 203 starts the LED warning lamps to remind user's sewing machine 20
It need to be corrected automatically again；Or when sewing machine 20 is switched on, if not having decision gate in correlation electric eye device 200
Threshold value Ddet and its corresponding objective emission luminous intensity Aopt, correction unit 203 can also start the LED warning lamps to remind user
Sewing machine 20 is corrected automatically.If in addition, when the different cloth of user's 20 sewing of sewing machine to be operated, user also can needle
Above-mentioned automatic corrigendum is re-started to different clothes, to obtain being suitble to another group of judgement threshold value Ddet of new cloth and its right
The objective emission luminous intensity Aopt answered.It completes after correcting automatically in addition, user can set correlation electric eye device 200, just opens
Dynamic sewing machine 20 starts sewing operation.That is, the automatic corrigendum operation of correlation electric eye device 200 can be carried out independently of sewing machine 20
Sewing operation.It can be thus corrected to avoid user while sewing machine 20 starts caused danger.Therefore, this hair
The sewing machine 20 of bright disclosed combination correlation electric eye device 200, which does not have, uses upper danger.Finally, it should be noted that this
Integrated setting is among sewing machine 20 for the correlation electric eye device 200 of invention, and therefore, correlation electric eye device 200 can be with
The current operation behavior of user is known, without there is malfunction to generate.
Fig. 3 is oneself for the correlation electric eye device 10 that a 3rd embodiment according to the present invention illustrates the present invention with flow chart
Dynamic method for correcting.First, in step S310, light emitting portion 110 sends out multiple first detection light L1 and of the first intensity A1
Multiple second detection light L2 of two intensity A2 pass through the first object 11 to reach light receiver 120.Light receiver 120 receives first
Detection light L1 and the second detection light L2, to generate multiple first analog intensity signals and corresponding the of corresponding first detection light L1
Multiple second analog intensity signals of two detection light L2 are to correction unit 130.In step S311, correction unit 130 generates on corresponding
State the one second lower limit desired value of the one first lower limit desired value TL1 and corresponding above-mentioned second detection light L2 of the first detection light L1
TL2。
In step S312, light emitting portion 110 sends out the multiple third detection light L3 and the second intensity A2 of the first intensity A1
Multiple 4th detection light L4 directly reach light receiver 120.Light receiver 120 receives third detection light L3 and the 4th detection light
L4, to generate multiple the four of the 4th detection light L4 of multiple third analog intensity signals and correspondence of correspondence third detection light L3
Analog intensity signal is to correction unit 130.In step S313, correction unit 130 generates the one the of corresponding above-mentioned third detection light L3
One second upper limit desired value TH2 of one upper limit desired value TH1 and corresponding above-mentioned 4th detection light L4.
In step S314, correction unit 130 generates one the according to above-mentioned first lower limit desired value and the first upper limit desired value
One difference.In step S315, correction unit 130 generates one second according to above-mentioned second lower limit desired value and the second upper limit desired value
Difference.In step S316, correction unit 130 from the average value of above-mentioned first lower limit desired value and the first upper limit desired value and on
It states and selects among the average value of the second lower limit desired value and the second upper limit desired value first, as judgement correlation electric eye device 10
Emission part 110 and receiving part 120 between whether there is the judgement threshold value Ddet of the first object 11.Finally, in step S317
In, correction unit 130 detects the first object to judge the intensity of the corresponding detection lights of threshold value Ddet, as correlation electric eye device 10
The emitted luminescence intensity Aopt of part 11.
Fig. 4 illustrates how correlation electric eye device 10 generates step for a fourth embodiment according to the present invention with flow chart
First and second differences described in S311~step S315.First, in step S410, correction unit 130 by above-mentioned first, second,
Third and the 4th strength signal are converted into corresponding multiple first, second, third and the 4th correction data.In the step s 420,
Correction unit 130 calculate above-mentioned first, second, third and the 4th corresponding one first average value of correction data, one second average value,
One third average value and one the 4th average value.
In step S430, correction unit 130 is selected from above-mentioned first correction data less than first average value and the mistake
The maximum value of the sum of difference is the first lower limit desired value.Then, correction unit 130 is selected from above-mentioned second correction data and is less than
Above-mentioned second average value and the error amount and maximum value be the second lower limit desired value.Then, correction unit 130 is from above-mentioned
The minimum value that the difference more than the third average value Yu the error amount is selected in three correction datas is first upper limit desired value.It connects
It, correction unit 130 selects the minimum value of the difference more than the 4th average value Yu the error amount from above-mentioned 4th correction data
For second upper limit desired value.Finally, in step S440, which is subtracted this under first by correction unit 130
Limit desired value generates first difference, and second upper limit desired value is subtracted the second lower limit desired value to generate this second poor
Value.The production method of first and second differences described in fourth embodiment through the invention, can inhibit dash forward come noise without
Correlation electric eye device 10 is influenced to be corrected automatically.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (21)
1. a kind of automatic method for correcting of correlation electric eye device, which is characterized in that the correlation electric eye device has light emitting
Portion and light receiver, the automatic method for correcting include：
Multiple first detection lights of the first intensity and multiple second detection lights of the second intensity are at least sent out by the light emitting portion,
Across one first object to the light receiver；
Generate one first lower limit desired value of corresponding first detection light and one second lower limit target of corresponding second detection light
Value；
Multiple 4th inspections of the multiple third detection lights and second intensity of first intensity are at least sent out by the light emitting portion
It surveys light and directly reaches the light receiver；
Generate one first upper limit desired value of the corresponding third detection light and one second upper limit target of corresponding 4th detection light
Value；
One first difference is generated according to the first lower limit desired value and first upper limit desired value；
One second difference is generated according to the second lower limit desired value and second upper limit desired value；
According to first and second difference, from an average value of the first lower limit desired value and first upper limit desired value or should
It is selected among one average value of the second lower limit desired value and second upper limit desired value first, as the correlation electric eye is judged
Whether the judgement threshold value of first object is occurred between the emission part and the receiving part；And
With the intensity of the corresponding detection light of judgement threshold value, it is to be used to detect first object institute as the correlation electric eye
Objective emission luminous intensity.
2. the automatic method for correcting of correlation electric eye device as described in claim 1, which is characterized in that generate first lower limit
Desired value, first upper limit desired value, the second lower limit desired value and second upper limit desired value further include：
Multiple first strength signals of corresponding first detection light are generated by the light emitting portion, correspond to the multiple of second detection light
Multiple the four of second strength signal, multiple third strength signals of the corresponding third detection light and corresponding 4th detection light
Strength signal；
By this first, second, third and the 4th strength signal be converted into corresponding multiple first, second, third and the 4th correction
Data；And
Numerical value the maximum in first correction data is set as the first lower limit desired value, it will be in second correction data
Numerical value the maximum is set as the second lower limit desired value, and the numerical value reckling in the third correction data is set as this on first
Desired value is limited, the numerical value reckling in the 4th correction data is set as second upper limit desired value.
3. the automatic method for correcting of correlation electric eye device as described in claim 1, which is characterized in that generate first lower limit
Desired value, first upper limit desired value, the second lower limit desired value and second upper limit desired value further include：
Multiple first strength signals of corresponding first detection light are generated by the light emitting portion, correspond to the multiple of second detection light
Multiple the four of second strength signal, multiple third strength signals of the corresponding third detection light and corresponding 4th detection light
Strength signal；And
According to this first, second, third and the 4th strength signal and the one first, second, third and the 4th error amount produce respectively
The raw first lower limit desired value, first upper limit desired value, the second lower limit desired value and second upper limit desired value.
4. the automatic method for correcting of correlation electric eye device as claimed in claim 3, which is characterized in that further include：
By this first, second, third and the 4th strength signal be converted into corresponding multiple first, second, third and the 4th correction
Data；
Calculate this first, second, third and the 4th corresponding one first average value of correction data, one second average value, a third
Average value and one the 4th average value；
Selected from first correction data it is less than first average value and first error amount and maximum value be this first
Lower limit desired value；
Selected from second correction data it is less than second average value and second error amount and maximum value be this second
Lower limit desired value；
The minimum value that the difference more than the third average value Yu the third error amount is selected from the third correction data be this
One upper limit desired value；And
The minimum value that the difference more than the 4th average value Yu the 4th error amount is selected from the 4th correction data be this
Two upper limit desired values.
5. the automatic method for correcting of correlation electric eye device according to any one of claims 1-4, which is characterized in that also wrap
It includes：
First upper limit desired value is subtracted into the first lower limit desired value and generates first difference；And
Second upper limit desired value is subtracted into the second lower limit desired value and generates second difference.
6. the automatic method for correcting of correlation electric eye device as claimed in claim 4, which is characterized in that further include：
By this first, second, third and the 4th strength signal be converted into corresponding multiple first, second, third and the 4th correction
Data；
Calculate this first, second, third and the 4th corresponding one first average value of correction data, one second average value, a third
Average value and one the 4th average value；
Calculate this first, second, third and the 4th corresponding one first standard deviation of correction data, one second standard deviation, one
Third standard deviation and one the 4th standard deviation；
Selected from first correction data it is less than first average value and first standard deviation and maximum value be this
One lower limit desired value；
Selected from second correction data it is less than second average value and second standard deviation and maximum value be this
Two lower limit desired values；
The minimum value that the difference more than the third average value Yu the third standard deviation is selected from the third correction data is should
First upper limit desired value；And
The minimum value that the difference more than the 4th average value Yu the 4th standard deviation is selected from the 4th correction data is should
Second upper limit desired value.
7. the automatic method for correcting of correlation electric eye device as claimed in claim 6, which is characterized in that further include：
First upper limit desired value is subtracted into the first lower limit desired value and generates first difference；And
Second upper limit desired value is subtracted into the second lower limit desired value and generates second difference.
8. the automatic method for correcting of correlation electric eye device as described in claim 1, which is characterized in that further include from this first
With a maximum is selected in the second difference, and the average value of lower limit desired value and upper limit desired value corresponding to the maximum is done
For the judgement threshold value.
9. the automatic method for correcting of correlation electric eye device as claimed in claim 8, which is characterized in that selected maximum is poor
Value need to be more than a decision content, and the maximum difference is numerical value the maximum among first and second difference.
10. a kind of correlation electric eye device, which is characterized in that including：
One light emitting portion；
One light receiver；And
One correction unit carries out a correct operation, to determine that the correlation electric eye device detects one first object institute mesh to be used
Mark emitted luminescence intensity；
The correct operation, including：
Control multiple second detections that the light emitting portion at least sends out multiple first detection lights and the second intensity of the first intensity
Light passes through first object to the light receiver；
Respectively according to the light receiver receive first detection light and second detection light, generate one first lower limit desired value and
One second lower limit desired value；
Control the light emitting portion at least send out first intensity multiple third detection lights and second intensity multiple four
Detection light directly reaches the light receiver；
Respectively according to the light receiver receive the third detection light and the 4th detection light, generate one first upper limit desired value and
One second upper limit desired value；
One first difference is generated according to the first lower limit desired value and first upper limit desired value；
One second difference is generated according to the second lower limit desired value and second upper limit desired value；
According to first and second difference, from an average value of the first lower limit desired value and first upper limit desired value or should
It is selected among one average value of the second lower limit desired value and second upper limit desired value first, as the correlation electric eye is judged
Whether the judgement threshold value of first object is occurred between the emission part and the receiving part；And
By the intensity of the corresponding detection light of judgement threshold value, as the objective emission luminous intensity.
11. correlation electric eye device as claimed in claim 10, which is characterized in that the correction unit carries out the correct operation and also wraps
It includes：
According to this first, second, third and the 4th detection light generate multiple first strength signals, right of corresponding first detection light
Should multiple second strength signals of the second detection light, multiple third strength signals of the corresponding third detection light and it is corresponding should
Multiple 4th strength signals of 4th detection light；
By this first, second, third and the 4th strength signal be converted into corresponding multiple first, second, third and the 4th correction
Data；And
Numerical value the maximum in first correction data is set as the first lower limit desired value, it will be in second correction data
Numerical value the maximum is set as the second lower limit desired value, and the numerical value reckling in the third correction data is set as this on first
Desired value is limited, the numerical value reckling in the 4th correction data is set as second upper limit desired value.
12. correlation electric eye device as claimed in claim 10, which is characterized in that the correction unit carries out the correct operation and also wraps
It includes：
According to this first, second, third and the 4th detection light generate multiple first strength signals, right of corresponding first detection light
Should multiple second strength signals of the second detection light, multiple third strength signals of the corresponding third detection light and it is corresponding should
Multiple 4th strength signals of 4th detection light；And
According to this first, second, third and the 4th strength signal and the one first, second, third and the 4th error amount produce respectively
The raw first lower limit desired value, first upper limit desired value, the second lower limit desired value and second upper limit desired value.
13. correlation electric eye device as claimed in claim 12, which is characterized in that the correction unit carries out the correct operation and also wraps
It includes：
By this first, second, third and the 4th strength signal be converted into corresponding multiple first, second, third and the 4th correction
Data；
Calculate this first, second, third and the 4th corresponding one first average value of correction data, one second average value, a third
Average value and one the 4th average value；
Selected from first correction data it is less than first average value and first error amount and maximum value be this first
Lower limit desired value；
Selected from second correction data it is less than second average value and second error amount and maximum value be this second
Lower limit desired value；
The minimum value that the difference more than the third average value Yu the third error amount is selected from the third correction data be this
One upper limit desired value；And
The minimum value that the difference more than the 4th average value Yu the 4th error amount is selected from the 4th correction data be this
Two upper limit desired values.
14. such as claim 10~13 any one of them correlation electric eye device, which is characterized in that the correction unit carries out the school
It just operates and further includes：
First upper limit desired value is subtracted into the first lower limit desired value and generates first difference；And
Second upper limit desired value is subtracted into the second lower limit desired value and generates second difference.
15. correlation electric eye device as claimed in claim 12, which is characterized in that the correction unit carries out the correct operation and also wraps
It includes：
By this first, second, third and the 4th strength signal be converted into corresponding multiple first, second, third and the 4th correction
Data；
Calculate this first, second, third and the 4th corresponding one first average value of correction data, one second average value, a third
Average value and one the 4th average value；
Calculate this first, second, third and the 4th corresponding one first standard deviation of correction data, one second standard deviation, one
Third standard deviation and one the 4th standard deviation；
Selected from first correction data it is less than first average value and first standard deviation and maximum value be this
One lower limit desired value；
Selected from second correction data it is less than second average value and second standard deviation and maximum value be this
Two lower limit desired values；
The minimum value that the difference more than the third average value Yu the third standard deviation is selected from the third correction data is should
First upper limit desired value；And
The minimum value that the difference more than the 4th average value Yu the 4th standard deviation is selected from the 4th correction data is should
Second upper limit desired value.
16. correlation electric eye device as claimed in claim 15, which is characterized in that the correction unit carries out the correct operation and also wraps
It includes：
First upper limit desired value is subtracted into the first lower limit desired value and generates first difference；And
Second upper limit desired value is subtracted into the second lower limit desired value and generates second difference.
17. correlation electric eye device as claimed in claim 10, which is characterized in that the correction unit carries out the correct operation and also wraps
It includes：
Select a maximum from first and second difference, and by the lower limit desired value and upper limit target corresponding to the maximum
The average value of value is as the judgement threshold value.
18. correlation electric eye device as claimed in claim 17, which is characterized in that selected maximum difference need to be sentenced more than one
Definite value, the maximum difference are numerical value the maximum among first and second difference.
19. a kind of sewing machine, which is characterized in that including：
One correlation electric eye device, including：
One light emitting portion；
One light receiver；And
One correction unit carries out a correct operation, to determine that the correlation electric eye device detects one first object institute mesh to be used
Mark emitted luminescence intensity；
The correct operation, including：
Control multiple second detections that the light emitting portion at least sends out multiple first detection lights and the second intensity of the first intensity
Light passes through first object to the light receiver；
Respectively according to the light receiver receive first detection light and second detection light, generate one first lower limit desired value and
One second lower limit desired value；
Control the light emitting portion at least send out first intensity multiple third detection lights and second intensity multiple four
Detection light directly reaches the light receiver；
Respectively according to the light receiver receive the third detection light and the 4th detection light, generate one first upper limit desired value and
One second upper limit desired value；
One first difference is generated according to the first lower limit desired value and first upper limit desired value；
One second difference is generated according to the second lower limit desired value and second upper limit desired value；
According to first and second difference, from an average value of the first lower limit desired value and first upper limit desired value or should
It is selected among one average value of the second lower limit desired value and second upper limit desired value first, as the correlation electric eye is judged
Whether the judgement threshold value of first object is occurred between the emission part and the receiving part；And
By the intensity of the corresponding detection light of judgement threshold value, as the objective emission luminous intensity；
One work table, including a working face, to place first object to carry out sewing operation；Wherein, the light-receiving
Portion is set on the working face, which is set on the work table；And
One correlation electric eye driving circuit couples the correlation electric eye device, to drive the light emitting portion, and with the correction unit
Cooperation carries out the correction of target lighting intensity.
20. sewing machine as claimed in claim 19, which is characterized in that executed the correct operation in the correlation electric eye device
Later, which can just start operation.
21. sewing machine as claimed in claim 19, which is characterized in that the sewing machine further includes a warning lamp, and it is right to be coupled to this
The correction unit of formula electric eye device is penetrated, wherein handling to obtain the abnormal correction number for corresponding to the objective emission luminous intensity in the correction unit
According to when, which opens the warning lamp to remind a user to execute the correct operation again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510061291.XA CN105986377B (en) | 2015-02-06 | 2015-02-06 | A kind of sewing machine and its correlation electric eye device and automatic method for correcting |
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|---|---|---|---|
| CN201510061291.XA CN105986377B (en) | 2015-02-06 | 2015-02-06 | A kind of sewing machine and its correlation electric eye device and automatic method for correcting |
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| WO1988008539A1 (en) * | 1987-04-24 | 1988-11-03 | Den Norske Stats Oljeselskap A.S | Transducer for arranging in a fluid, particularly for the measurement of the flow-velocity of a fluid in a pipe, by transmitting/receiving sonic pulses |
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| JPH06246081A (en) * | 1993-02-22 | 1994-09-06 | Juki Corp | Edge position measuring device for automatic sewing machine |
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|---|---|---|---|---|
| WO1988008539A1 (en) * | 1987-04-24 | 1988-11-03 | Den Norske Stats Oljeselskap A.S | Transducer for arranging in a fluid, particularly for the measurement of the flow-velocity of a fluid in a pipe, by transmitting/receiving sonic pulses |
| GB2212266A (en) * | 1987-12-23 | 1989-07-19 | Brother Ind Ltd | Cloth-pattern sensing device for a sewing machine |
| US4917031A (en) * | 1987-12-23 | 1990-04-17 | Brother Kogyo Kabushiki Kaisha | Cloth-pattern sensing device for a sewing machine |
| JPH06246081A (en) * | 1993-02-22 | 1994-09-06 | Juki Corp | Edge position measuring device for automatic sewing machine |
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